CN114353647A - Verification tool and method for centering condition of marine gas turbine and underframe - Google Patents
Verification tool and method for centering condition of marine gas turbine and underframe Download PDFInfo
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- CN114353647A CN114353647A CN202210099065.0A CN202210099065A CN114353647A CN 114353647 A CN114353647 A CN 114353647A CN 202210099065 A CN202210099065 A CN 202210099065A CN 114353647 A CN114353647 A CN 114353647A
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Abstract
The invention relates to a verification tool and a verification method for centering conditions of a marine gas turbine and a bottom frame. After the front cross beam and the rear cross beam are installed on the underframe, the gaps among all the parts and the heights of all the parts are accurately measured, the size and the position precision of all the parts can be accurately obtained, and the conclusion whether centering installation is qualified or not is obtained through comparison with a theoretical value.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a verification tool and a verification method for centering conditions of a marine gas turbine and a chassis.
Background
The gas turbine is widely applied to industries such as locomotives, power generation, ships and the like as a high-speed rotating machine. After the gas turbine and the underframe are installed, the conditions of the axial direction, the radial direction and the height of the installation need to be verified. Because the equipment of several groups of gas turbines is very difficult to align, the probability that the alignment result may have position deviation is high, and therefore, the circumferential, radial and high calibration accuracy of installation is particularly important.
Disclosure of Invention
The applicant provides a verification tool and a verification method for the alignment condition of a marine gas turbine and a chassis, aiming at the defects in the prior art, and the verification tool and the verification method have the advantages that the verification tool and the verification method are reasonable in structure, the special tool is used, positioning holes and the chassis are used for positioning, and height sizes are observed by using a level gauge and a vernier caliper, so that positioning verification of the gas turbine and the chassis in the axial direction, the radial direction and the height direction is realized.
The technical scheme adopted by the invention is as follows:
a verification tool for centering conditions of a marine gas turbine and a bottom frame comprises a bottom frame, a front cross beam tool and a rear cross beam tool which are arranged on the bottom frame,
the front beam tool comprises a front beam and a front top plate arranged at the middle section of the front beam through a rib plate assembly, and a front positioning key vertical to the front beam is arranged in the middle of the front top plate; front bottom plates are arranged at two ends of the front cross beam and are connected with the underframe;
the rear beam tool comprises a rear beam and a rear top plate arranged at the middle section of the rear beam through a rib plate assembly, and a rear positioning key vertical to the rear beam is arranged in the middle of the rear top plate; the two ends of the rear cross beam are provided with rear bottom plates which are connected with the underframe;
the front beam tool is matched with a front shaft neck, and the rear beam tool is matched with a rear shaft neck.
A verification method for a verification tool by utilizing the alignment condition of a marine gas turbine and an underframe comprises the following steps:
the method comprises the following steps: mounting a front journal at a front casing support center position of the gas turbine; the external hoisting device is connected with the lifting lugs on the front cross beam to hoist the front cross beam; the front cross beam is horizontally arranged at the front supporting position of the gas turbine underframe and is fixedly arranged with the underframe;
step two: mounting a rear shaft neck at the central position of the rear part of the power turbine output shaft of the gas turbine, and connecting the rear shaft neck with the rear part of the power turbine output shaft by adopting a square ruler; the external hoisting device is connected with the lifting lugs on the rear cross beam, hoists the rear cross beam, horizontally places the rear cross beam at the rear supporting position of the gas turbine underframe, and is fixedly installed with the underframe;
step three: observing the height of a front top plate of the front cross beam tool by using a level gauge; measuring the levelness of the front top plate by using a level meter; the height of the front beam is adjusted to be consistent with the height of the front top plate and the front support of the underframe, and the precision tolerance value range of the height of the front beam is within +/-0.10 mm; at the moment, the upper surface of the front top plate is in a horizontal state;
step four: observing the height of a top plate of the rear cross beam tool by using a level gauge; measuring the levelness of the rear top plate by using a level meter; adjusting the height of the rear beam to ensure that the precision tolerance value range of the height of the rear beam is within +/-0.10 mm; the height of the rear top plate is consistent with that of the rear support of the underframe; at the moment, the upper surface of the rear top plate is in a horizontal state;
step five: measuring the actual height difference H4 between the upper end of the front journal and the front top plate by using a vernier caliper, wherein the precision tolerance range of H4 and the theoretical height difference is within +/-0.10 mm; vertically placing a square on the upper surface of the front top plate, wherein one side of the square is tightly attached to the side surface of the front positioning key, and observing the distance between the square and the side surface of the front journal, wherein the distance is less than or equal to 0.2 mm;
step six: measuring an actual height value H3 between the upper end of the rear journal and the rear top plate by using a vernier caliper, wherein the precision tolerance range of H3 and a theoretical height value is within +/-0.10 mm; vertically placing a square on the upper surface of the rear top plate, wherein one side of the square is tightly attached to the side surface of the rear positioning key, and observing the distance between the square and the side surface of the rear journal, wherein the distance is less than or equal to 0.2 mm; the square is vertically placed on the upper surface of the rear top plate, one side of the square is tightly attached to the side surface of the rear positioning key, and the distance between the square and the side surface of the power turbine output shaft is observed and is less than or equal to 0.2 mm;
and if the accuracy requirement is met, the installation is judged to be qualified.
In the first step and the second step, positioning holes are formed in the front bottom plate and the rear bottom plate of the front cross beam and the rear cross beam and are connected with the underframe through the positioning holes.
And step two, when the rear cross beam tool is hoisted and placed at the rear supporting position of the gas turbine chassis, the rear top plate corresponds to the position right below the rear shaft neck.
And in the third step and the fourth step, jacking bolt holes are formed in the two ends of the front bottom plate and the rear bottom plate, adaptive bolts are correspondingly installed in the jacking bolt holes, and the bolts are used for adjusting the vertical heights of the front bottom plate and the rear bottom plate.
Step five, the method for detecting the distance less than or equal to 0.2mm in the step six adopts a 0.2mm feeler gauge to detect whether the feeler gauge can be plugged into the corresponding gap; if the plug-in is not possible, the gap size is qualified.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, and can accurately measure the clearance between each part and the height of each part after the front cross beam and the rear cross beam are installed on the underframe, accurately know the size and the position precision of each part, and obtain the conclusion whether the centering installation is qualified or not by comparing with the theoretical value.
In the invention, the multi-direction size is measured by using the level gauge, the vernier caliper and the square, the dimensional precision and the assembly precision can be ensured, and accurate qualified parameters can ensure that parts are in a multi-degree-of-freedom limiting state, so that the positioning verification of the gas turbine and the underframe in three directions of axial direction, radial direction and height is realized.
Drawings
Fig. 1 is a front view of a front cross member tooling of the present invention.
Fig. 2 is a plan view of the front cross member tooling of the present invention.
Fig. 3 is a schematic structural view of the front beam tool and the front journal centering structure of the invention.
Fig. 4 is a front view of the rear cross beam tooling of the present invention.
Fig. 5 is a top view of the rear cross beam tooling of the present invention.
FIG. 6 is a schematic view of the alignment of the rear cross beam tooling and the rear journal of the present invention.
FIG. 7 is a schematic view of the rear axle journal centering mounted to the undercarriage of the present invention.
Wherein: 1. a chassis; 4. a front journal; 5. a rear journal; 6. a square; 7. a vernier caliper; 8. a rib plate assembly; 9. lifting lugs; 10. positioning blocks;
201. a front cross member; 202. a front top plate; 203. a front positioning key; 204. a front chassis;
301. a rear cross member; 302. a rear roof panel; 303. a rear positioning key; 304. a rear floor;
801. a first front rib; 802. a second front rib; 803. a third front rib; 804. a first rear rib plate; 805. a second rear rib plate; 806. a third rear rib.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 7, the verification tool for the alignment of the marine gas turbine with the underframe 1 of the embodiment comprises an underframe 1, a front cross beam tool and a rear cross beam tool installed on the underframe 1,
the front beam tool comprises a front beam 201 and a front top plate 202 arranged at the middle section of the front beam 201 through a rib plate assembly, and a front positioning key 203 vertical to the front beam 201 is arranged in the middle of the front top plate 202; front bottom plates 204 are arranged at two ends of the front cross beam 201, and the front bottom plates 204 are connected with the underframe 1;
the rear cross beam tool comprises a rear cross beam 301 and a rear top plate 302 arranged at the middle section of the rear cross beam 301 through a rib plate assembly, and a rear positioning key 303 vertical to the rear cross beam 301 is arranged in the middle of the rear top plate 302; rear bottom plates 304 are mounted at two ends of the rear cross beam 301, and the rear bottom plates 304 are mounted and connected with the underframe 1;
the front beam tooling is matched with a front shaft neck 4, and the rear beam tooling is matched with a rear shaft neck 5.
As shown in fig. 1-3, the front top plate 202 is located above the front cross member 201, and the front top plate 202 is connected to the front cross member 201 through a rib plate assembly, where the rib plate assembly includes a second front rib plate and a third front rib plate perpendicular to the front top plate 202 and the front cross member 201; first front ribs are arranged on the front bottom plates 204 at two ends of the front cross beam 201, and the first front ribs are connected with the front bottom plates 204 and the front cross beam 201.
The middle position of the front bottom plate 204 is provided with a positioning hole, and the front bottom plate 204 is also provided with a jacking bolt hole for accommodating a jacking bolt. A clamping groove is formed in the middle of the front top plate 202, and the front positioning key 203 is embedded into the clamping groove; the front positioning key 203 and the front top plate 202 are tightly connected by three bolts. Lifting lugs are further welded to the two sides, located on the front top plate 202, of the front cross beam 201, and the two lifting lugs are symmetrically arranged. The corresponding front journal 4 is cylindrical, and the diameter of the front journal 4 is the same as the width H2 of the navigation key.
As shown in fig. 4 to 6, the rear top plate 302 of the rear cross beam tooling is located above the rear cross beam 301 and is connected with the rear cross beam 301 through the second rear rib plate and the third rear rib plate; rear bottom plates are welded to the lower portions of the two ends of the rear cross beam 301, and a first rear rib plate is connected between the rear bottom plates and the rear cross beam 301. The rear bottom plate is also provided with a positioning hole and a jacking bolt hole, and the mode of the holes is a common technology and is not shown in the figure. A clamping groove is formed in the middle of the rear top plate 302, a rear positioning key 303 is involved in the clamping groove, and the rear positioning key 303 is tightly connected with the rear top plate 302 through three bolts; two positioning blocks are further arranged on the rear top plate 302, the positioning blocks are based on a rear positioning key 303, and the two sides of the rear positioning key 303 are symmetrically arranged. Two lifting lugs are also arranged on the rear cross beam 301.
The corresponding rear journal 5 is cylindrical, and in conjunction with fig. 7 and 5, the diameter of the rear journal 5 is equal to the width of the rear detent key 303, i.e., the width H2 of the front detent key 203.
The verification method of the verification tool for the alignment condition of the marine gas turbine and the underframe 1 comprises the following steps:
the method comprises the following steps: mounting a front journal 4 at a front casing support center position of the gas turbine; the external hoisting device is connected with the lifting lugs 9 on the front cross beam 201 to hoist the front cross beam 201; the front cross beam 201 is horizontally arranged at the front supporting position of the gas turbine underframe 1 and is fixedly arranged with the underframe 1;
step two: mounting a rear shaft neck 5 at the central position of the rear part of the power turbine output shaft of the gas turbine, and connecting the rear shaft neck with the rear part of the power turbine output shaft by adopting a square 6; the external hoisting device is connected with the lifting lugs 9 on the rear cross beam 301, hoists the rear cross beam 301, horizontally places the rear cross beam at the rear supporting position of the gas turbine underframe 1, and is fixedly installed with the underframe 1;
step three: observing the height of a front top plate 202 of the front cross beam tool by using a level gauge; measuring the levelness of the front top plate 202 by using a level meter; the height of the front cross beam 201 is adjusted to be consistent with the front supporting height of the front top plate 202 and the underframe 1, and the precision tolerance value range of the height of the front cross beam 201 is within +/-0.10 mm; at this time, the upper surface of the front top plate 202 is in a horizontal state;
step four: observing the height of a top plate of the rear cross beam tool by using a level gauge; measuring the levelness of the rear top plate 302 with a level gauge; adjusting the height of the rear cross beam 301 to ensure that the precision tolerance value range of the height of the rear cross beam 301 is within +/-0.10 mm; the height of the rear top plate 302 is consistent with the height of the rear support of the chassis 1; at this time, the upper surface of the rear top plate 302 is in a horizontal state;
step five: measuring the actual height difference H4 between the upper end of the front journal 4 and the front top plate 202 by using a vernier caliper 7, wherein the precision tolerance range of H4 and the theoretical height difference is within +/-0.10 mm; vertically placing a square 6 on the upper surface of the front top plate 202, wherein one side of the square 6 is tightly attached to the side surface of the front positioning key 203, and observing the distance between the square 6 and the side surface of the front journal 4, wherein the distance is less than or equal to 0.2 mm;
step six: measuring the actual height value H3 between the upper end of the rear journal 5 and the rear top plate 302 by using a vernier caliper 7, wherein the precision tolerance range of H3 and the theoretical height value is within +/-0.10 mm; vertically placing a square 6 on the upper surface of the rear top plate 302, wherein one side of the square 6 is tightly attached to the side surface of the rear positioning key 303, and observing the distance between the square 6 and the side surface of the rear journal 5, wherein the distance is less than or equal to 0.2 mm; the square 6 is vertically placed on the upper surface of the rear top plate 302, one side of the square 6 is tightly attached to the side surface of the rear positioning key 303, and the distance between the square 6 and the side surface of the power turbine output shaft is observed, wherein the distance is less than or equal to 0.2 mm;
and if the accuracy requirement is met, the installation is judged to be qualified.
In the first step and the second step, positioning holes are respectively formed in the front cross beam 201, the front bottom plate 204 and the rear bottom plate 304 of the rear cross beam 301, and are connected with the underframe 1 through the positioning holes.
In the second step, when the rear cross beam tool is lifted and placed at the rear supporting position of the gas turbine underframe 1, the rear top plate 302 is located right below the rear journal 5.
In the third step and the fourth step, jacking bolt holes are formed in the two ends of the front bottom plate 204 and the rear bottom plate 304, adaptive bolts are correspondingly installed at the jacking bolt holes, and the bolts are used for adjusting the vertical heights of the front bottom plate 204 and the rear bottom plate 304.
Step five, the method for detecting the distance less than or equal to 0.2mm in the step six adopts a 0.2mm feeler gauge to detect whether the feeler gauge can be plugged into the corresponding gap; if the plug-in is not possible, the gap size is qualified.
After the front beam tool and the front journal, the rear beam tool and the rear journal are installed on the underframe and the gas turbine, whether the axial height meets the requirement is verified by measuring the sizes from the top plates of the front beam tool and the rear beam tool to the front journal and the rear journal; the transverse centering condition is verified by measuring whether the side surfaces of the positioning keys of the front and rear beam tools and the side surface of the shaft neck are in the same plane; and the axial centering condition is verified by judging whether the side surface of the positioning block of the rear cross beam tool and the side surface of the output shaft of the power turbine are on the same plane.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (6)
1. The utility model provides a marine gas turbine and chassis (1) examination frock of centering condition which characterized in that: comprises an underframe (1), a front beam tool and a rear beam tool which are arranged on the underframe (1),
the front cross beam tool comprises a front cross beam (201) and a front top plate (202) arranged at the middle section of the front cross beam (201) through a rib plate assembly, wherein a front positioning key (203) perpendicular to the front cross beam (201) is arranged in the middle of the front top plate (202); front bottom plates (204) are mounted at two ends of the front cross beam (201), and the front bottom plates (204) are connected with the underframe (1);
the rear cross beam tool comprises a rear cross beam (301) and a rear top plate (302) arranged at the middle section of the rear cross beam (301) through a rib plate assembly, and a rear positioning key (303) perpendicular to the rear cross beam (301) is arranged at the middle position of the rear top plate (302); rear bottom plates (304) are mounted at two ends of the rear cross beam (301), and the rear bottom plates (304) are connected with the underframe (1) in an installing manner;
the front beam tool is matched with a front shaft neck (4), and the rear beam tool is matched with a rear shaft neck (5).
2. A verification method for verifying the alignment condition of a marine gas turbine and an underframe (1) by using the verification tool as claimed in claim 1, which is characterized by comprising the following steps:
the method comprises the following steps: mounting a front journal (4) at a supporting central position of a front casing of the gas turbine; the external hoisting device is connected with a lifting lug (9) on the front cross beam (201) and used for hoisting the front cross beam (201); the front cross beam (201) is horizontally placed at the front supporting position of the gas turbine underframe (1) and is fixedly installed with the underframe (1);
step two: mounting a rear shaft neck (5) at the central position of the rear part of an output shaft of a power turbine of the gas turbine, and connecting the rear shaft neck with the rear part of the output shaft of the power turbine by adopting a square (6); the external hoisting device is connected with a lifting lug (9) on the rear cross beam (301), the rear cross beam (301) is hoisted, horizontally placed at the rear supporting position of the gas turbine underframe (1), and fixedly installed with the underframe (1);
step three: observing the height of a front top plate (202) of the front cross beam tool by using a level gauge; measuring the levelness of the front top plate (202) by using a level meter; the height of the front cross beam (201) is adjusted to be consistent with the front supporting height of the front top plate (202) and the chassis (1), and the precision tolerance value range of the height of the front cross beam (201) is within +/-0.10 mm; at the moment, the upper surface of the front top plate (202) is in a horizontal state;
step four: observing the height of a top plate of the rear cross beam tool by using a level gauge; measuring the levelness of the rear top plate (302) by using a level meter; adjusting the height of the rear cross beam (301) to ensure that the precision tolerance value range of the height of the rear cross beam (301) is within +/-0.10 mm; the height of the rear top plate (302) is consistent with the height of the rear support of the chassis (1); at the moment, the upper surface of the rear top plate (302) is in a horizontal state;
step five: measuring the actual height difference H4 between the upper end of the front journal (4) and the front top plate (202) by using a vernier caliper (7), wherein the precision tolerance range of H4 and the theoretical height difference is within +/-0.10 mm; vertically placing a square (6) on the upper surface of the front top plate (202), wherein one side of the square (6) is tightly attached to the side surface of the front positioning key (203), and observing the distance between the square (6) and the side surface of the front journal (4), wherein the distance is less than or equal to 0.2 mm;
step six: measuring the actual height value H3 between the upper end of the rear journal (5) and the rear top plate (302) by using a vernier caliper (7), wherein the precision tolerance range of H3 and the theoretical height value is within +/-0.10 mm; vertically placing a square (6) on the upper surface of the rear top plate (302), wherein one side of the square (6) is tightly attached to the side surface of the rear positioning key (303), and observing the distance between the square (6) and the side surface of the rear journal (5), wherein the distance is less than or equal to 0.2 mm; the square (6) is vertically placed on the upper surface of the rear top plate (302), one side of the square (6) is tightly attached to the side surface of the rear positioning key (303), and the distance between the square (6) and the side surface of the power turbine output shaft is observed and is less than or equal to 0.2 mm;
and if the accuracy requirement is met, the installation is judged to be qualified.
3. An assay method as claimed in claim 2, wherein: in the first step and the second step, positioning holes are formed in the front bottom plate (204) and the rear bottom plate (304) of the front cross beam (201) and the rear cross beam (301) and are connected with the underframe (1) through the positioning holes.
4. An assay method as claimed in claim 2, wherein: and in the second step, when the rear cross beam tool is hoisted and placed at the rear supporting position of the gas turbine underframe (1), the rear top plate (302) is right below the rear journal (5).
5. An assay method as claimed in claim 2, wherein: in the third step and the fourth step, jacking bolt holes are formed in the two ends of the front bottom plate (204) and the rear bottom plate (304), adaptive bolts are correspondingly installed at the jacking bolt holes, and the bolts are used for adjusting the vertical heights of the front bottom plate (204) and the rear bottom plate (304).
6. An assay method as claimed in claim 2, wherein: step five, the method for detecting the distance less than or equal to 0.2mm in the step six adopts a 0.2mm feeler gauge to detect whether the feeler gauge can be plugged into the corresponding gap; if the plug-in is not possible, the gap size is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099065.0A CN114353647B (en) | 2022-01-27 | 2022-01-27 | Calibration tool and method for centering condition of marine gas turbine and underframe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099065.0A CN114353647B (en) | 2022-01-27 | 2022-01-27 | Calibration tool and method for centering condition of marine gas turbine and underframe |
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| CN114353647A true CN114353647A (en) | 2022-04-15 |
| CN114353647B CN114353647B (en) | 2023-06-23 |
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| CN202210099065.0A Active CN114353647B (en) | 2022-01-27 | 2022-01-27 | Calibration tool and method for centering condition of marine gas turbine and underframe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114888552A (en) * | 2022-06-29 | 2022-08-12 | 成都国营锦江机器厂 | Hydraulic sleeve assembling method and tool for high-speed hydraulic dynamometer |
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| CN114888552B (en) * | 2022-06-29 | 2023-08-11 | 成都国营锦江机器厂 | Hydraulic nesting assembly method and tool for high-speed hydraulic dynamometer |
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| Publication number | Publication date |
|---|---|
| CN114353647B (en) | 2023-06-23 |
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